Anodic Oxidation

Anodic Oxidation is the electrochemical oxidation of metal or alloy. Under corresponding electrolyte and specific process conditions, aluminum and its alloy forms a layer of oxide film on the aluminium parts (anode) because of the action of impressed current. If not specified, anodic oxidation usually refers to the sulfuric acid anodic oxidation.

In order to overcome the aluminum alloy’s surface hardness and wear resistance of defects, expand the application and prolong service life, surface treatment technology has become an indispensable part of aluminum alloy, and the anode oxidation technology is currently the most widely used and most successful.

Main purpose:

1. Improve the wear, corrosion and weather resistance of parts.

2. The oxide generates transparent film which can be colored to various colorful films.

3. Provide the part with protective, insulative and decorative property

4. Strengthen the adhesion of organic coating.

Electrophoresis

Electrophoresis paint film has the advantages of plump, uniform, flat and smooth features. Its hardness, adhesion, corrosion, impact performance and permeability is better than other coating process.

Detailed features:

1. High transparency and plumpness, with special gloss and transparency. It has highly stereoscopic effect after coating and obvious substrate color.

2. High hardness. When the temperature is 150 ℃ while baking, the hardness can be up to 3-4 H.

Abrasive Blasting

Abrasive Blasting (Sandblasted)

Metal surface’s abrasive blasting is a kind of process technology of forcibly propelling a stream of abrasive material against the surface of metal workpiece (Stainless steel, Brass, Aluminium etc) to clean and modificate the surface.

As the most radical, common, quickly and efficient cleaning method, the surface of sandblasting treatment can remove scale, rust, carbon deposition and welding slags, edge burr and some minor directed scratches. Sand material commonly used are bead blasting, wheel blasting, silicon carbide etc. The mechanical properties of the workpiece’s surface can be improved, which can improve the fatigue resistance of the workpiece, increase its adhesion between the coating and workpiece, extend the durability of the coating, and also be good for the flow of paint and decoration.

Electroplating

Electroplating is to use the principle of electrolysis in some metal surface plating a thin layer of the other metal and alloy process, which is the application of electrolytic action made of metal or other material adhered on the surface of the parts of a layer of metal film process to prevent corrosion and improve wear resistance, electric conductivity, reflection, aesthetics, and so on.

Nickel plating is widely used and can be used as protective decorative coating on the surface of steel, zinc die casting, aluminum alloy and copper alloy. It can protect the substrate material from corrosion and play a role of bright decoration. It is often as the middle coating of others. If we plating a thin layer of chromium or imitation gold plating on it, it will realize better resistance to corrosion and more beauty. In the aspect of functional applications, nickel plating parts with 1~3 mm thickness in special industries can achieve repair purpose.

Chrome plated can increase the smoothness and anti-corrosion performance of products' surface. It won’t rust and leave any rusty spot. Original parts have little deformation during the process of plating, which can increase the hardness (more than HR65) and the wear resistance.

3. Galvanizing:

The role of galvanizing is to improve the corrosion resistance of plating, prolonging the time of rust protection. Galvanizing is divided into hot dipped galvanized and electrogalvanizing according to different processes of galvanizing. The functions of hot galvanizing and electrogalvanizing is the same, but the effects are far different. The reason is that their galvanized layer thickness is largely different. The thickness of electric galvanized layer is generally only 20~30 microns, while the thickness of the galvanizing layer is generally about 200 microns.

Electropolishing

Electropolishing (Electrochemical Polishing, Electrolytic Polishing)The workpiece being polished serves as the anode and insoluble metal as the cathode. When two poles are immersed in bath of electrolyte, a current will pass from the anode, where metal on the surface is oxidized and dissolved in the electrolyte to the cathode, which results in removing the burrs of workpiece and increasing the brightness.

Advantages of Electropolishing1. Color and lustre is consistent both inside and outside with long-lasting sheen. The concave places that mechanical polishing cannot reach can be leveled.2. High efficiency and low cost. Bulk sample production.3. With increasing surface corrosion resistance, it can be applied to all stainless steel materials